{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98192",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-98192"
  ],
  "published": "2026-10-06T08:47:10Z",
  "summary": "wifi: wcn36xx: Fix potential use-after-free in TX ack timer teardown",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wcn36xx: Fix potential use-after-free in TX ack timer teardown\n\nwcn36xx_dxe_deinit() tears down the TX ack timer with timer_delete(),\nwhich only dequeues the timer and does not wait for a callback that is\nalready executing; the preceding free_irq() calls synchronize the\ninterrupt handlers only. The callback, wcn36xx_dxe_tx_timer(), can\ntherefore be running past the teardown and use the wcn freed along\nwith the ieee80211_hw in wcn36xx_remove(): it takes wcn->dxe_lock,\nreads wcn->tx_ack_skb and passes wcn->hw to\nieee80211_tx_status_irqsafe().\n\nFix this by using timer_shutdown_sync(), which waits for a running\ncallback and also prevents the timer from being rearmed again. The\ntimer is set up again by wcn36xx_dxe_init() on the next start, so the\nstart/stop cycle is unaffected.\n\nThis issue was found by an in-house static analysis tool.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98192"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3edabc965bcce49cbb2ec1c2b91f8a555a8ec8bd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2bddc5d088cf430ecd913020472f1def32a36a3d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c0df0878e9110909cf0bec6080d72d36401a0c89"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d9be5e75530772fc31637070d51e5717d6aeaa2a"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-06T08:47:10Z"
  }
}